Apparatus for turning, shaping, and screw-cutting.



H. S. LAND.

APPARATUS PoR-TURNING, sHAPmG, AND SCREW CUTTING.

Arme/mon mso' Mms, |914.

Patented Jan. 4,1916.

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HENRY STEPHENLAND, o'r'JiCo'UNTY or Essnxf, ENGLAND.

APPARATUS Foa 'frunNrNa sHArI'NG, AND SCREW-CUTTING.

saec'iac'a'aon' ci Letters Patent.

Patented Jan, 4, 191e.

originar application vfnea yDecember 31,1912, serial N. 739,562'5, Divided ana'this appiicatgn med January 5,1914. .'se'riaiNo. 810.470.

To all whom tmay concern 1 Be it known that I, HENRY STEPHEN LAND, a subject of the King of Great Britain, residing in Essex, England, fand whose post- Aoffice addressis 8 Park View,7-O-ld Road, Lee,

-in the county of.EsseX,"fEngland,have invented certain new and.' useful 'Imfp'rovements in Apparatus ,-iorl Turning, Shaping, vand Screw-Cutting, of 'Whichthe vfollowing is a specification.

This invention' whichl formed a part of .that embodied in my co-pen'ding patent application Serial No. 739508,4 relates to a lathe attachment or ltool of lthe kind .which is vadapte'dxto eli'ect the rapid 'production of turned and screwed, or turned bodies of one or more diameters, from bars or rods of metal yof any cross sectional outline, and comprises a device to enable apparatus of the above character to beapplied to an ordinary turning lathe. According to this inventionfthe cradle on which the tool is mounted to slide in a fore and aft direction and which lis carried by the back center or mandrel of the lathe, is afforded support'at its forward end by ties extending therefrom on each side to a clamp or'clamps secured on l the lathe mandrel.

The' invention is villustrated in the accompanyingsdrawing, wherein* Figure 1 1s a side elevat1on shoWmg a tool I holder mounted on a cradle attached to the holder or slide, the base of which is dovetailed as shown at d1 to slide fore and aft in the cradle b which is correspondingly undercut. The end lplate or bracket b1 of the cradle is provided with 'a pin 0 for attachment to the puppethead mandrel.` This pin is made separable so that when the apparatus is supplied it can readily be adapted toa mandrel of any taper, for which pur-A pose'4 the pin is provided with a flange or head clfwhich. vfits, in 'a lcorrespon'dingly shaped recess in the end bracket b1 of the cradle and is therein 'secured' as by means of,-

' setscrews d. The pin and'pin head are centered, as indicated,l ready `for turning the pin to the taper required'for any given lathe'.l A stop pin e 'is screwedinto the base of thev tool holder so that the head of vthe pinwpro'- jects intothe opening between the two sidebars of the cradle and by engagementwith the 'cross bar b2 at the end-of the cradle prevents the tool holder sliding too .far out of the latter.

As shown'in Figs. 1, 2 .and 3, the forward end of the cradle is preferably supported V from the puppet head of the lathe by means of tiesf f secured at one end to-pins g extending laterally vfrom the sides ofthe cradle at its front end, and at the other end to pins h' extending laterally from'a clamp secured on the puppet head mandrel j.

Having now described the nature ofmy invention and the best means I know4 of ,carrying the .same into practical effect, I

claim 1. In a device of the class described, thel combination of a cradle having means Whereby itl may be detachably supported at its rear end from'the lathe puppet head and pro.

vided-With a straight longitudinal slideway, a-lathe tool-holder having a dependent por- Aso tion formed as a counterpart oit-and adapted to slide to 'and fro rectilineally in the said l' slide'way, means for limiting the 'relative .movement of the'cr'adle and tool-holder, and means for supporting the forward-end ofv the cradle from the'lathe puppet ead, said means comprising a pin carried b 1 the cradle, a pm secured tothe puppet hea and-a rod" connecting said pins. 2. In a device of the classI described, 'the combinatmn of a cradle having interchangeable means' whereby it may bedetachably supported from the lathe 'puppet'head and 1 provided with a straight longitudinal slide- Way, 'a lathe tool-holder having a dependent portion formed as a counterpart of and adapted to slide to and fro reotilineally inl In testimony whereof h-Lve signed my the said slideway, means lfor limiting the name tothis specification 1n the presence of relative movement of the cradle and tooltwo subscribing-Witnesses.

holder, and means for supporting the cradle HENRY STEPHEN LAND. from the lathe, said means com 'rising a pin Witnesses: y j carried by the orad1e, a pin; eoured to the JOSEPH MILLARD,

lathe, and rods connecting'said pins. W; I. SKERTEN.

Copies of this patent may be obtained for five cents each,` by addressing the Commissioner of Patents,

' Washington, D. C. 

